Author Archives: Mark Wilson

About Mark Wilson

Mark Wilson is an emeritus Professor of Geology at The College of Wooster. He specializes in invertebrate paleontology, carbonate sedimentology, and stratigraphy. He also is an expert on pseudoscience, especially creationism.

Sed/Strat goes local with its field trip: the Meadville Shale and the Logan Formation (Lower Carboniferous)

WOOSTER, OHIO–The traditional spring field trip in the Sedimentology & Stratigraphy course at Wooster is taken several hours south, usually in Jackson County or, as last year, in a soggy quarry outside of Dayton. This time, though, we stayed nearby, … Continue reading
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Wooster Geology poster session at the 2013 Senior Research Symposium at The College of Wooster

WOOSTER, OHIO–It was a bit of a crowded room in Andrews Library for our geology seniors (and all their friends, family and faculty), but it was a very happy place. Joe Wilch (above) escaped the crowd, though, because he is … Continue reading
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Lauren Vargo (’13) starts off the Wooster Geologists in the 2013 Senior Research Symposium at The College of Wooster

WOOSTER, OHIO–The College of Wooster has an annual celebration of Independent Study after all the theses are done and (most) of the oral examinations. It is much fun as our students present their research to the community, which often includes … Continue reading
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Wooster’s Fossil of the Week: A pentamerid brachiopod from the Lower Silurian of New York

Another brachiopod this week. This simple fossil is an internal mold of the brachiopod Pentamerus oblongus (J. de C. Sowerby, 1839). It was a very common and widespread taxon throughout North America and Europe in the Early Silurian. This particular … Continue reading
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Wooster’s Fossil of the Week: A terebratulid brachiopod from the Middle Triassic of southern Israel

Sure, I could have picked a pristine shell from our collection, but I like the rugged character of this one. It is the terebratulid brachiopod Coenothyris oweni Feldman, 2002, from the lower Saharonim Formation (Middle Triassic) of Har Devanim, southern … Continue reading
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Wooster’s Fossil of the Week: A camerate crinoid from the Lower Carboniferous of north-central Ohio

Visitors often bring rocks and fossils to the Geology Department for identification. We love to solve the puzzles (or at least make the attempt), and our new friends appreciate names and ages for their treasures. (Usually. We’ve disappointed more than … Continue reading
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Wooster’s Fossil of the Week: A camerate crinoid from the Lower Carboniferous of north-central Ohio

Visitors often bring rocks and fossils to the Geology Department for identification. We love to solve the puzzles (or at least make the attempt), and our new friends appreciate names and ages for their treasures. (Usually. We’ve disappointed more than … Continue reading
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Wooster’s Fossil of the Week: A camerate crinoid from the Lower Carboniferous of north-central Ohio

Visitors often bring rocks and fossils to the Geology Department for identification. We love to solve the puzzles (or at least make the attempt), and our new friends appreciate names and ages for their treasures. (Usually. We’ve disappointed more than … Continue reading
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Wooster’s Fossil of the Week: A pretty little fish from the Eocene of Wyoming

Most people have seen this fossil fish type. Geologists, in fact, have probably seen Knightia eocaena Jordan, 1907, thousands of times. It is present in nearly every gift shop that sells fossils, usually as small plaques or glued to refrigerator … Continue reading
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The field trip scout

WOOSTER, OHIO–One of the early spring pleasures of a geologist in the Upper Midwest is finally getting outside and scouting the field trips for the semester. Today we had bright sun and temperatures in the 50s (I know — I’m … Continue reading
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